Getting to space requires leaving Kerbin's atmosphere above 70 kilometers. Orbit requires gaining lateral velocity while maintaining vertical thrust. Delta-V (change in velocity) needs around 4500m/s for orbit
ILS is a precision approach aid using two radio beams for lateral and vertical guidance. Standard approach angle is 3 degrees for stable profile. Decision height (DH) determines when pilots must continue approach
Airspeed is the aircraft's speed relative to the air it's flying through. Pitot-static system measures airspeed using pitot probes and static ports. Airspeed is typically measured in knots, but ICAO recommends kilometers per hour
Wingspan is the distance between wingtips in birds and airplanes. Wingspan is measured in straight lines from wingtip to wingtip. Wingspan is also used for arm span in humans
Air navigation differs from surface craft navigation due to high speeds and limited fuel capacity. Successful navigation requires avoiding getting lost and enforcing aircraft laws. Pilots must constantly maintain position awareness due to limited in-flight rescue options
Slip occurs when aircraft moves sideways and forward relative to airflow. Flying in slip reduces lift-to-drag ratio, making it aerodynamically inefficient. Unintentional slips common during turns by inexperienced pilots